Preparation process of colorless, transparent, high-hardness and yellowing-resistant novel epoxy ornament adhesive

A preparation process and high hardness technology, applied in the formulation field of new epoxy jewelry adhesive, can solve the problems of difficult procurement, high price, insufficient supply of raw materials, etc., and achieve the effects of low cost, long operation time, and excellent yellowing resistance.

Pending Publication Date: 2021-03-23
武汉捷巍环氧新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a colorless, transparent, high-hardness, yellowing-resistant novel epoxy jewelry preparation process to solve the technical problems of insufficient supply of existing raw materials, high prices, and difficulty in purchasing, and can further improve Performance of epoxy jewelry glue

Method used

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  • Preparation process of colorless, transparent, high-hardness and yellowing-resistant novel epoxy ornament adhesive

Examples

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Embodiment 1

[0016] A preparation process of a colorless, transparent, high-hardness, yellowing-resistant novel epoxy jewelry glue. The jewelry glue is made of A glue and B glue. The process steps are as follows:

[0017] Preparation of glue A:

[0018] 25 parts (mass parts, the same below) of epoxy resin 128, 10 parts of epoxy resin E20, 30 parts of epoxy resin E44, 25 parts of polypropylene glycol 800, 0.1 part of triphenyl phosphite, 0.3 part of 2,6- Di-tert-butylphenol and 0.5 parts of anti-ultraviolet agent UV-75 were put into the A glue stirring tank and stirred for 30 minutes to obtain the A glue.

[0019] Synthesis of B glue:

[0020] (1) Add 35 parts of tetrahydromethylphthalic anhydride, 35 parts of hexahydromethylphthalic anhydride, 0.2 parts of tetrabutylammonium bromide and 0.3 parts of benzyldimethylamine into the reaction kettle;

[0021] (2) Add a mixed solution of 20 parts of dibutyl phthalate and 0.1 part of didodecyl alcohol ester;

[0022] (3) Start stirring, heat up...

Embodiment 2

[0028] A preparation process of a colorless, transparent, high-hardness, yellowing-resistant novel epoxy jewelry glue. The jewelry glue is made of A glue and B glue. The process steps are as follows:

[0029] Preparation of glue A:

[0030] 35 parts (mass parts, the same below) of epoxy resin 128, 15 parts of epoxy resin E20, 25 parts of epoxy resin E44, 25 parts of polypropylene glycol 800, 0.3 parts of triphenyl phosphite, 0.1 parts of 2,6- Put di-tert-butylphenol and 0.3 part of anti-ultraviolet agent UV-75 into the A glue stirring tank and stir for 25 minutes to obtain A glue.

[0031] Synthesis of B glue:

[0032] (1) Add 55 parts of tetrahydromethylphthalic anhydride, 20 parts of hexahydromethylphthalic anhydride, 0.5 part of tetrabutylammonium bromide and 0.1 part of benzyldimethylamine into the reaction kettle;

[0033] (2) Then add a mixed solution of 20 parts of dibutyl phthalate and 0.3 parts of didodecyl alcohol ester

[0034] (3) Start stirring, heat up to 65°C...

Embodiment 3

[0039] A preparation process of a colorless, transparent, high-hardness, yellowing-resistant novel epoxy jewelry glue. The jewelry glue is made of A glue and B glue. The process steps are as follows:

[0040] Preparation of glue A:

[0041] 30 parts (mass parts, the same below) of epoxy resin 128, 20 parts of epoxy resin E20, 30 parts of epoxy resin E44, 20 parts of polypropylene glycol 800, 0.2 parts of triphenyl phosphite, 0.2 parts of 2,6- Put di-tert-butylphenol and 0.4 parts of anti-ultraviolet agent UV-75 into the A glue stirring tank and stir for 20 minutes to obtain A glue.

[0042] Synthesis of B glue:

[0043] (1) Add 45 parts of tetrahydromethylphthalic anhydride, 28 parts of hexahydromethylphthalic anhydride, 0.35 parts of tetrabutylammonium bromide and 0.2 parts of benzyldimethylamine into the reaction kettle;

[0044] (2) Add a mixed solution of 20 parts of dibutyl phthalate and 0.2 parts of didodecyl alcohol ester;

[0045] (3) Start stirring, heat up to 70°C...

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Abstract

A preparation process of a colorless, transparent, high-hardness and yellowing-resistant novel epoxy ornament adhesive is characterized in that the ornament adhesive is prepared from an adhesive A andan adhesive B, the adhesive A and the adhesive B are uniformly mixed according to a mass ratio of 1:1, are defoamed in a vacuum box of -0.1 MPa, then are sub-packaged into silica gel molds, and are cured for 1h at a temperature of 110-120 DEG C to obtain the ornament adhesive. The invention provides a new formula of the epoxy resin component and the curing agent component, and the obtained curedproduct is colorless and transparent in appearance, flat and smooth in surface, excellent in yellowing resistance and long in operation time, and the shore hardness can reach 84 or above. The method has the advantages of accessible raw materials, simple technique and low cost, and the obtained curing agent has excellent properties and can easily implement industrialization.

Description

technical field [0001] The invention relates to a colorless, transparent, high-hardness and anti-yellowing novel epoxy ornamental glue formula. In particular, it relates to a preparation process of a new type of epoxy jewelry glue that is colorless, transparent, high in hardness and resistant to yellowing. Background technique [0002] Traditional epoxy jewelry adhesives generally use polyether amine and alicyclic amine systems, among which polyether amine includes 230 and 403, etc., and alicyclic amine includes isophorone diamine IPDA, 4,4 ， -Diaminodiphenylmethane HMDA and 1,3-cyclohexanedimethylamine 1,3-BAC, etc. Due to the increase of environmental protection supervision, upstream enterprises have stopped or reduced production one after another, resulting in insufficient supply of these core raw materials for making epoxy jewelry glue. There are often no raw materials in the market, and the price has been rising all the way, resulting in more and more costs. The less ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J163/02C08G59/42C08G59/50C08G59/58
CPCC09J163/00C08G59/4215C08G59/4284C08G59/5033C08G59/58C08L2205/035C08L2205/025C08L2201/10C08L2201/08C08L63/00
Inventor 李俊杰胡登华
Owner 武汉捷巍环氧新材料有限公司
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